SJ presents the Ultimate Edition IWC Portuguese Series IW390704 OB2, featuring a diameter of 45mm x 14.5mm, equipped with the Cal. 89361 chronograph movement. It boasts an exceptional luminous feature and has undergone extensive modifications: .1. Double-sided domed sapphire crystal glass.2. The case is crafted using top-tier CNC technology with multiple polishing processes, resulting in clear and smooth lines.3. The strap has been upgraded to an imported rubber band that is odorless, dust-resistant, and does not turn white.4. The buckle has been upgraded to the original factory Earth long buckle.5. The dial has been calibrated for gloss and details that closely resemble the authentic product, crafted with care to rival boutique quality.SJ meticulously presents a sophisticated multifunctional mechanical watch for men, showcasing ultra-realistic product photography.